business. >> is there any additional public comment? okay. seeing none, the public comment portion is closed. commissioner borden? >> yes, to the zoning administrator, for noise ordinance, what are the requirements around noise and i know it's after a certain point in the evening. i have live near nightclubs, bars and all the rest and see this issue all the time, where most of san francisco businesss do not have air conditioning. it gets very warm and people open windows and obviously sound travels out, because even if you have people at your private home and your windows are open, your neighbors can hear that typically. what are the sound ordinance -- noise ordinance sort of rules around the sound travel for any business, i guess? >> i don't know all the details specifically.